期刊
IONICS
卷 27, 期 6, 页码 2553-2560出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11581-021-04017-w
关键词
Pt3Co; C nanoparticles; Chemical ordered phase; Oxygen-reduction reaction; High-performance catalyst; Solid phase method
资金
- National Natural Science Foundation of China [11604147]
- Foundation of National Laboratory of Solid State Microstructures, Nanjing University [M32048]
A solid phase method was developed to fabricate structurally ordered Pt3Co/C nanoparticles with controllable component proportion, exhibiting high crystallinity, small size, and narrow size distribution. These nanoparticles showed enhanced catalytic performance for oxygen-reduction reaction in acidic conditions. Additionally, this methodology can be applied to prepare other Pt-based nanoparticles supported on carbon.
We developed a solid phase method to fabricate structurally ordered Pt3Co/C nanoparticles (NPs) with controllable component proportion as a high efficiency catalyst toward oxygen-reduction reaction. As a result, Pt3Co/C NPs exhibit high crystallinity with small average size and narrow size distribution. Moreover, the ordered Pt3Co/C NPs own enhanced ORR catalytic performance in acid. During the preparation process, the NaCl-matrix acts synergistically with carbon black as nanoreactors for Pt alloying with Co, avoiding serious sintering resulted by annealing at high temperature. Furthermore, other Pt-based NPs supported on carbon can also be prepared by this methodology.
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